ML18038B137

Forwards LER Re Unit 2 Emergency Generator Turbocharger Failure That Resulted in Noncompliance W/Ts LCO

ML18038B137
Person / Time
Site:	Browns Ferry
Issue date:	02/22/1995
From:	Machon R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18038B138	List: ML18038B137
References
NUDOCS 9503010222
Download: ML18038B137 (6)

Text

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REGULATORY INFORMATION DISTRIBUTION SYSTEM.(RIDS)

ACCESSION NBR:9503010222 DOC.DATE: 95/02/22 NOTARIZED: NO DOCKET I FACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee

.05000260 AUTH.NAME

.AUTHOR.AFFILIATION MACHON,R.D.

Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Forwards LER re Unit 2 emergency generator turbocharger failure that resulted in noncompliance w/TS LCO:

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL SIZE:

TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

NOTES

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. WILLIAMS,J.

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NOTE TO ALL;RIDS"RECIPIENTS:

PLEASE HEL'P US TO REDUCE WASTE! CONTACTTHE DOCUMENTCONTROL DESK,. ROOM PI -37 (EXT.'504-2083 ) TO ELIMINATEYOUR NAMEFROM DISTRIBUTIONLISTS FOR DOCUMENTS YOU DON'T NEED!

FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED:

LTTR 27 ENCL 27

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Tennessee Vaitey Authority, Post Offce Box 2000, Decatur, Atabarna 35609-2000 R. D; (Rick) Machon Vice President, Browne Feny Nuctear Ptant FES 3'2 1995 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C.

20555

Dear Sir:

10 CFR 50.73 BROWNS FERRY NUCLEAR PLANT (BFN)

UNZTS 1 g 2 g AND 3 DOCKET NOS ~ 50-259'50-260'ND,296 - FACZLZTY. OPERATZNG LZCENSE DPR-33~

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AND 68 - LZCENSEE. EVENT REPORT (LER) 50-260/95001 The enclosed report provides details concerning a Unit 2 Emergency Generator turbocharger failure that resulted in noncompliance with a Technical Specifications (TS) Limiting Condition for Operation (LCO).

On January 16,

1995, Emergency Diesel Generator (EDG)

C.was declared inoperable due to:a turbocharger failure.

This placed Unit 2 in a '7 day LCO per TS LCO 3.9.B.3.

Because of.

the time involved in obtaining the necessary parts.and making the repairs, TVA was unable to return the EDG to operable status within the required LCO time limit.

Thus, by letter issued January 23,

1995, TVA requested and received Discretionary Enforcement from the requirements of the TS.

The Discretionary Enforcement permitted continued reactor operation for no longer than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.beyond"the TS requirements.

The EDG was returned to service on January 25, 1995 within the time allowed by the 'Discretionary Enforcement period.

The turbocharger was sent offsite and disassembled for analysis.

Preliminary results of the analysis are currently being evaluated and have been discussed with the NRC Senior Resident Inspector.

TVA will provide a supplemental report following the completion of the failure analysis.

'st5030i0222 st50222 PDR ADOCK 050002b0 S

PDR'

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U.S. Nuclear Regulatory Commission FEB 22 1995 TVA is reporting this event in accordance with 10 CFR 50.73 (a)(2)(i)(B) as any operation or condition prohibited by the plants Technical Specifications.

Sincerely, R.

D.

Ma on Site Vice President PAB 1E-BFN Enclosure cc.(Enclosure):

INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 Paul Krippner American Nuclear Insurers Town Center, Suite 300S 29 South Main Street West Hartford, Connecticut 06107 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637

Athens, Alabama

.35611.

Regional Administrator U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. J.

F. Williams, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville,.Maryland 20852

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